Apparatus, methods and systems are disclosed for interacting with an electronic device, including inputting letters. One embodiment of the apparatus includes buttons and a text output field displayed on a touch-sensitive display screen. Each button is assigned one or more letters. The text output field displays text and tentative letter selection indicators. In one embodiment of the method, the device records button actuations that ambiguously identify letter selections. With each actuation, a tentative letter selection indicator becomes appended to the end of the contents of the text output field. Upon activation of a button such as a spacebar button, or in response to an event such as expiration of a time period, a language algorithm disambiguates the recorded ambiguously identified letter selections and returns a word suggestion. The returned word replaces a sequence of appended tentative letter selection indicators displayed in the text output field.